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Simplifying x2 + 9y2 = 28 Solving x2 + 9y2 = 28 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-9y2' to each side of the equation. x2 + 9y2 + -9y2 = 28 + -9y2 Combine like terms: 9y2 + -9y2 = 0 x2 + 0 = 28 + -9y2 x2 = 28 + -9y2 Simplifying x2 = 28 + -9y2 Reorder the terms: -28 + x2 + 9y2 = 28 + -9y2 + -28 + 9y2 Reorder the terms: -28 + x2 + 9y2 = 28 + -28 + -9y2 + 9y2 Combine like terms: 28 + -28 = 0 -28 + x2 + 9y2 = 0 + -9y2 + 9y2 -28 + x2 + 9y2 = -9y2 + 9y2 Combine like terms: -9y2 + 9y2 = 0 -28 + x2 + 9y2 = 0 The solution to this equation could not be determined.
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